1. Introduction
Thank you for choosing SANOTO Bone Conduction Headphones, Model CAAS23. These open-ear headphones are designed to provide a comfortable listening experience while keeping you aware of your surroundings. Featuring advanced bone conduction technology, a dual microphone system for clear calls, Bluetooth 5.3 connectivity, and IPX6 waterproofing, they are ideal for various activities including jogging and cycling.
2. What's in the Box
Please check the package contents to ensure all items are present:
- 1 x SANOTO Bone Conduction Headphones (Model CAAS23)
- 1 x Type-C Charging Cable
- 1 x Quick Start Guide
- 2 x Earplugs (for use in noisy environments, if desired)
3. Product Overview
The SANOTO CAAS23 headphones utilize bone conduction technology to deliver audio through your cheekbones, leaving your ear canals open. This design enhances situational awareness, making them suitable for outdoor activities.
Key Features:
- ENC Dual Microphone: Equipped with Environmental Noise Cancellation (ENC) dual microphones to capture clear voices and minimize background noise during calls.
- Bluetooth 5.3: Ensures low latency, stable connections, and high-fidelity stereo sound quality.
- Fast Charging: Integrated IC fast charging technology allows for quick power-ups.
- IPX6 Waterproof: Designed to be sweat and water-resistant, including a waterproof Type-C charging port. Note: Not suitable for swimming.
- Comfortable & Lightweight: Ergonomic design for extended wear without discomfort, promoting safety by allowing you to hear your surroundings.
- Dual Device Connection: Seamlessly connect to two devices simultaneously, such as a phone and a tablet, for uninterrupted audio.

Image: SANOTO Bone Conduction Headphones Model CAAS23, showing the overall design.
Controls:
The headphones feature intuitive physical buttons for easy control:
- Multi-function Button (Left): Typically used for power on/off, play/pause, answer/end calls.
- Volume Up/Down Buttons (Right): Adjust audio volume.

Image: Close-up of the headphone controls, indicating volume buttons.

Image: Close-up of the headphone controls, indicating physical keys.
4. Setup
4.1 Charging the Headphones
Before first use, fully charge your headphones. Use the provided Type-C charging cable.
- Connect the Type-C end of the charging cable to the charging port on the headphones.
- Connect the USB-A end of the cable to a compatible USB power adapter (not included) or a computer's USB port.
- The LED indicator on the headphones will show charging status (e.g., red for charging, blue for fully charged).
- A full charge takes approximately 50 minutes, providing up to 8 hours of battery life. A 10-minute charge can provide up to 3 hours of music playback.

Image: The headphones connected to a charging cable, illustrating the fast charging feature.
4.2 Bluetooth Pairing
To connect your headphones to a device:
- Ensure the headphones are powered off.
- Press and hold the Multi-function button until the LED indicator flashes red and blue, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "SANOTO CAAS23" (or similar name) from the list of found devices.
- Once connected, the LED indicator will typically show a solid blue light or flash slowly.
4.3 Dual Device Connection
The headphones support simultaneous connection to two devices:
- Pair the headphones with the first device as described above.
- Disable Bluetooth on the first device.
- Put the headphones back into pairing mode and pair with the second device.
- Re-enable Bluetooth on the first device. The headphones should now be connected to both devices, allowing you to switch audio sources seamlessly.

Image: Headphones connected to both a laptop and a smartphone, demonstrating dual device connectivity.
5. Operating Instructions
5.1 Power On/Off
- Power On: Press and hold the Multi-function button for approximately 3 seconds until the LED indicator lights up.
- Power Off: Press and hold the Multi-function button for approximately 5 seconds until the LED indicator turns off.
5.2 Music Playback
- Play/Pause: Press the Multi-function button once.
- Next Track: Double-press the Multi-function button.
- Previous Track: Triple-press the Multi-function button.
- Volume Up: Press the Volume + button.
- Volume Down: Press the Volume - button.
5.3 Call Management
- Answer Call: Press the Multi-function button once.
- End Call: Press the Multi-function button once during a call.
- Reject Call: Press and hold the Multi-function button for approximately 2 seconds.
- Activate Voice Assistant: Press the Multi-function button three times (may vary by device).
6. Maintenance
Proper care ensures the longevity and performance of your SANOTO Bone Conduction Headphones.
- Cleaning: Wipe the headphones with a soft, dry cloth. For stubborn dirt, use a slightly damp cloth. Avoid harsh chemicals or abrasive materials.
- Water Resistance: The headphones are IPX6 waterproof, meaning they are resistant to sweat and splashes. Do not submerge them in water or use them for swimming. Ensure the charging port is dry before charging.
- Storage: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
- Charging Port: Keep the Type-C charging port clean and free of debris.

Image: The headphones with water droplets, illustrating their IPX6 water resistance.
7. Troubleshooting
If you encounter issues with your headphones, refer to the following common solutions:
| Problem | Possible Solution |
|---|---|
| Headphones do not power on | Ensure the headphones are charged. Connect to a power source and check the charging indicator. |
| Cannot pair with device | Ensure headphones are in pairing mode (flashing red/blue LED). Disable and re-enable Bluetooth on your device. Move closer to the device. |
| No sound or low volume | Check volume levels on both headphones and your connected device. Ensure headphones are properly positioned on your cheekbones. Re-pair the headphones. |
| Call quality is poor | Ensure the microphone area is not obstructed. Move to a quieter environment to reduce background noise. |
| Intermittent connection | Ensure no obstacles are between the headphones and your device. Move closer to your device. Avoid environments with strong Wi-Fi or other wireless interference. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | CAAS23 |
| Brand | SANOTO |
| Connectivity Technology | Wireless (Bluetooth) |
| Bluetooth Version | 5.3 |
| Ear Placement | Open Ear |
| Form Factor | Bone Conduction |
| Noise Control | Active Noise Cancellation (ENC Dual Microphone) |
| Water Resistance Level | IPX6 Waterproof |
| Battery Life (Average) | Up to 8 Hours |
| Battery Charge Time | Approx. 50 minutes (10 min charge for 3 hrs playback) |
| Charging Port | Type-C |
| Frequency Range | 20 Hz - 20,000 Hz |
| Compatible Devices | Phones, Tablets |
| Product Dimensions | 14.1 x 12.1 x 5.9 cm |
| Item Weight | 150 g |
9. Warranty and Support
SANOTO products are designed for reliability and performance. For specific warranty information and support, please refer to the warranty card included in your product packaging or visit the official SANOTO website. Keep your purchase receipt as proof of purchase for warranty claims.
If you require further assistance or have questions not covered in this manual, please contact SANOTO customer support through the contact information provided with your product or on the official brand website.
10. Product Videos
SANOTO Bone Conduction Headphones Overview
Video: An overview of SANOTO Bone Conduction Headphones, highlighting key features and design. This video is provided by the seller.
IFECCO Bone Conduction Headphones Features
Video: A detailed look at the features of IFECCO Bone Conduction Headphones, which share similar technology and design principles. This video is provided by a seller.
